ngk iridiums

brs86supra · 01-01-2007, 03:42 PM

i was wondering if anyone has had any problems with the ngk iridiums xi. and what there supposed to be gapped at. the plugs are all black and they are new plugs. and if they are gapped wrong could it make your car idle rough. like for example when im in idle, the exhaust breaks up and black specs get over everything behind the car, and when i give it some gas in neutral it feels like it wants to shut off. or could these problems be due to my timing not set right, like to high (higher than 10 degrees) any help woould be greatly appreciated

sprigmo1 · 01-01-2007, 05:07 PM

Black smoke has u running rich!
Check your timing and fuel pressure.
Gap your plugs properly!

IHateHacks · 01-01-2007, 10:53 PM

I've ran NGK iridium IX's with no problems.

Spark plug gap for the 7M-GTE is .8 mm or .031 in.

Ignition timing on 87-88 turbos is 10 degrees BTDC.

Ignition timing on 89-on turbos is 12 degrees BTDC.

Make sure you set BASE ignition timing by disabling the electronic advance.

To disable the electronic advance on 87 and later models, jumper terminals E1 and TE1 at the diagnostic connector.

Ever run a compression test on your engine?

01-01-2007, 03:42 PM	#1
brs86supra 3" Exhaust Join Date: Feb 2006 Location: suffolk, virginia Posts: 65	ngk iridiums i was wondering if anyone has had any problems with the ngk iridiums xi. and what there supposed to be gapped at. the plugs are all black and they are new plugs. and if they are gapped wrong could it make your car idle rough. like for example when im in idle, the exhaust breaks up and black specs get over everything behind the car, and when i give it some gas in neutral it feels like it wants to shut off. or could these problems be due to my timing not set right, like to high (higher than 10 degrees) any help woould be greatly appreciated

01-01-2007, 05:07 PM	#2
sprigmo1 3" Exhaust Join Date: Nov 2005 Location: WALDORF, MARYLAND Posts: 63	ngk Black smoke has u running rich! Check your timing and fuel pressure. Gap your plugs properly! __________________ " It Ain't Eazy Being Me" 1992 Supra /TSW 618 Rims/Goodridge Brake Lines/Powerslot Rotors/Eibach Springs/Tokico/KYB Struts/ST Sway Bars/Cusco Strut Bars/Targa Bars/RPS Clutch/C's Shifter/Aero.AFPR/RC 560cc Inj/Walbro Fuel Pumps/Lexus AFM/HKS Timing Gears/K&N Intake/HPF Intercooler/Greddy BOV/Turbonetics 60-1 CT26/CSF 53mm RAD /Apexi S-AFC /Apexi AVC-R /Apexi N1Exhaust/RT DP/RT Cat/Jegs Catch Can/Greddy TT/Blitz Boost/EGT Guage/Blitz Peek Hold Device/Lotek Dual A-Pillar Pod/AEM UEGO WB

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01-01-2007, 10:53 PM	#3
IHateHacks 20psi boost Join Date: May 2006 Location: New Haven/Hamden Posts: 793	I've ran NGK iridium IX's with no problems. Spark plug gap for the 7M-GTE is .8 mm or .031 in. Ignition timing on 87-88 turbos is 10 degrees BTDC. Ignition timing on 89-on turbos is 12 degrees BTDC. Make sure you set BASE ignition timing by disabling the electronic advance. To disable the electronic advance on 87 and later models, jumper terminals E1 and TE1 at the diagnostic connector. Ever run a compression test on your engine?